Answer / r.sridharan

In generator there is nothing to limit current.Hence winding will over heat and burn.In order to protect generator we kept at maximum position.
In motor to increase torque at initial condition rheostat is kept at minimum position.

Answer / c saisandeep

GENERATOR rheostat is maximum position in order to protect the winding from high currents suddenly............
MOTOR rheostat is minimum position soo that flux increases .If flux increases the speed of the motor can be reduced....................

Answer / s.laxman

When the field rheostat is in minimum position more current will flow through field and hence more flux and therefore armature current is low and speed is less at the time of start

Answer / ram

Field rheostat is in minimum position because of the motor runs at a rated speed. If the field rheostat is maximum position the motor runs at above the rated speed

Answer / ranganath bhagavathi

At initial condition,we have high armature current,so in order to reduce that we use 3-point starter.
Then after we to kept a constant speed.so if current decreases obviously speed increses.so thats y we decrese the flux/arm current speed increses..

what is the difference between equipment earth and system earth.

1 Answers   Hofincons,

---

what is the different ratings of ACB/VCB/SF6 which is used at HT side

3 Answers   Hosco,

---

if installing the transformer why put the sprit the stone ?

1 Answers  

---

Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

0 Answers  

---

How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

0 Answers  

---

---

Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

0 Answers  

---

what is the principle of switch gear? where its function ?

9 Answers  

---

WHAT IS DIFFERENCE BETWEEN PHASE CONVERTER AND VFD

1 Answers  

---

how many power plants in andhra pradesh,how many types and there capacity

2 Answers  

---

why 3 phase is preferred than 1 phase?

4 Answers   Infosys,

---

Shall we get electrical shock if we touch the positive terminal of a 230 volt dc supply?

22 Answers   Essar,

---

WHAT IS THE DIFFERNCE BETWEEN AIS AND GIS IN SWITCH GEAR?

5 Answers   L&T,

---